High pressure union



May 26 1942. E'.O.'KUNKEL 2,284,216;

7 HIGH PRESSURE UNION Filed June 27, 1941 FIG. 2

INVENTOR ELZY 0. KUNKEL Patented May 26, 1942 Elzy 0. Kunkel, Sandoval, Ill., assignor of onc half to Otto E. Ellick, Covington, Ky.

Application June 27, 1941,.Serial No. 400,062

2 Claims.

This invention relates to pipe couplings and more particularly to improvements of pipe couplings of the so-called high pressure, heavy duty An object of the present invention is directed to improvements in the component parts of a pipe coupling whereby a highly efficient leak-proof union for high pressure fluid is provided between the adjacent ends of pipes and other conductors connected thereby.

- Another object of the invention is to provide an inexpensive, 'yet nevertheless rugged, heavy duty, double seated pipe coupling wherein each of the seats are adapted to house a deformable gasket.

Still another object of the invention is to provide a pipe coupling having the hereinabove decribed characteristics, which is particularly designed to effectively lessen the occurrence of blowouts in or at the couplings of a high pressure pipe line.

These and other objects are-attained by the means described herein and disclosed in the accompanying drawing, in which:

Fig. 1 is a longitudinal section of my improved coupling, or union, comprising the present inposition.

Fig. 2 is an assembled view of the coupling of Fig. 1; a part thereof being shown in longitudinal section for revealing the interrelationship of the component parts thereof when assembled.

'I'he coupling of the present invention comprises generally speaking. three basic elements, to wit: a pair of complementary half coupling members l and II which are adapted to be drawn together to provide a, high pressure heavy duty union, by means of a coupling nut l2.

With particular reference to coupling member |0 it will be noted that it includes a forwardly projecting cylindrical tongueJ 3 and an annular socket portion M. The. forward or free end of tongue I3 is preferably provided with a double taper as at I5 and I6 for providing a V-tip l1, and the bottom of socket I4 is preferably provided with a V-shaped seat l8 defined by the upwardly convergent walls l9 and respectively, as shown. The outer face of member I0 may be provided with external threads l9 which are engageable by internal threads 20 of coupling nut l2. With particular reference to Fig. 1 it will be observed that an annular wall 2| 'isprovided between the adjacent ends of wall IQ of socket i4 and wall l6 of V-tip l'l.

With. particular reference now to coupling 'vention with the component parts in an extended member II, it will be observed that it comprises a forwardly projecting, annular tongue 29 the forward or free end of which is provided with inwardly converging 'walls 30 and 3| for providing a V -tip 32; Member likewise includesan annular socket portion 33'which is provided with a V-shaped seat 34 defined by a pair of. downwardly convergent walls 35 and 35. An annular wall 31 is provided between adjacent ends of wall 30 of V-tip 32 and wall 36 of socket 33.

As clearly disclosed in the drawing, the respective forwardly projecting members l3 and 29 of coupling members I0 and II are adapted to be projected into the respective complementary socket portions 33 and H of one another. It will likewise be noted that annular wall 2| of coupling member I0 and annular wall 31 of coupling member v| l are adapted to make substantial coplanar engagement with oneanother when'members l0 and II are assembled, as disclosed in Fig. 2. Annular walls 2| and 31 preferably make a close, but sliding fit whereby to facilitate ease of assemblage of a union.

In the preferred embodiment of the invention the bottom portion of each of sockets l4 and 33 are provided with a suitable gasket, preferably of a deformable material, such as poured lead or the like, indicated generally in the drawing by the numeral 40. When the complementary coupling members lll'and H are drawn together by the action of coupling nut l2 the deformable gasket material 40 is substantially distributed evenly between the corresponding and {adjacent faces of each v-tip and the V-seat ofits complementary socket portion of the other coupling member. It will be observed that the closer members l0 and l are drawn together, the greater will be the force tending to distribute the deformable material 40 over the divergent faces of the V-tips of tongues l3 and 29. Continued tightening of nut l2 will tend to force the deformable material outwardly beyond the ends of said tips thence between annular faces 2| and 31, into the threaded connection between coupling nut |2 and the external threads IQ of member I0, and into the interior of the coupling at 4|, thereby distributing the gasket forming material between the adjacent, complementary portions of coupling members l0 and ii.

In the preferred embodiment of the'invention, the lateral width of annular faces 2| and 31 are so proportioned as to provide a well defined vertical wall separating the adjacent portions of the V-tips of tongue member I3 and 29 of the complementary coupling members In and H.

NT OFFICE" when thecoupling construction,

Such construction provides an eiilcient barrier against the passage of high pressure fluid from the interior of the coupling thence into and between the adiacentfaces 2i and 31, thereby precluding the accumulation of high" pressure fluid which has heretoiore been blowouts in high pressure between said faces, the direct cause of 'unions.

7 the base portions of the seats and, tips, while at the same time overlying'one another to be forced into intimate contactbythe outward force of If desired the 'thickness of the inner tongue,

I! in the drawing, may beof a lesser-dimension than the thickness of the outer tongue l3 which effectivelyreinforces the inner tongue against the disruptive forces of the high 'pressureinuid present in the interior of the-union.

As disclosed in Fig. 2 the inner bore of an as-.l sembled union is smooth and uniformin diameter deformable gasket material over the "seat and ior disposing the respective coupling members in substantially coplanar parallelism throughout their respective whereby the tendency for a turbulent condition y to arise in the high pressure fluid passing ther'ethrough is eifectively eliminated. members assembled the annular faces 2i and 31 are disposed in substantial coplanar parallelism throughout their width.

It will be observed that the complementary faces of the cooperating tongue and seat portions of coupling members I] and H' are inclined relative to the longitudinal axis ofsaid members for I providing a tortuous passagewayfrom the inside to the v wherein theangle between the tahave been fully outside of the union. Byreason of such high pressure in the coupling, the tongue, socket and cylindrical wall portion of one coupling member being the complement of the other coupling member, a gasket of deformable material disposed in the seat of each socket, and means for drawing'said coupling members together for embedding the V-tip of each "tongue in they-seat of its complementary socket and for distributing the adjacent portionsof each V-tipand its complementary V- the cylindrical walls of lengths.

2. A high pressure coupling comprising a pair of separable coupling members each of which includes a central bore, a forwardly projecting tonguethe free outer edge of whichterminates in a V-tip having a base portion, a recessed-socket pered faces of the U-tip of the tongues is pref- I erably, though not necessarily, lessthan a right angle, a seal is provided which will permit the safe and reliable passage of fluids under pressure through the union.

It should be understood that various mo iiii cations and changes in thegstructural details of the device may be made,

appended claims, without departing spirit of the invention.

,What is claimed is: p

l. A high pressure coupling from the comprising a pair -of separable coupling members each of which includes a forwardly projecting tongue the free outer edge of which terminates in a V-tip having abase portion, a recessed socket portion the bottom of which terminates in .a V-seat likewise having a base portion, and an annular cylindriw cal wall extending a substantial distance between the, base portion of the V-tipof a tongueand the base portion of the V-seat of its associated socket, thereby to establish an exaggerated 'oflset; meltaionship of the V-seats of the coupling memthe scope ofthe bers, with the cylindrical wall portions separating exaggerated and tips, f another to be forced into portion-the bottom of which terminates in a V- seat likewise having a base portion, and an-annula'r cylindrical wall extending. 'a substantial distance between the base portion of the V-tip of a tongue and-the, base portion of the ,V-seat of its; associated socket; thereby to establish ;an'

the coupling members, with the cylindrical wall portions separating the base portions of the seats while at the sametimeoverlying one intimtae' contact 1 by the outward force of high pressure in the couthetongue, socket and cylindricalwall portion of one coupling member being the complement of the other coupling member, a gasket of deformable material disposed in the seat of each socket, and means for drawing said boupling members together for embedding the V-tip passage. of. substantially, uniform diameterthrough the coupling.

offset relationship ofthe V -seats of ELZYQKUNKEL. 

